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Gemini 2.5 Flash vs GPT-5.4-Pro

0 vs 1 benchmarks won

Google
Gemini 2.5 Flash
OpenAI
GPT-5.4-Pro
Overview
CompanyGoogleOpenAI
Release dateApr 17 2025Mar 5 2026
Model type
Open sourceNoNo
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
94.4%
Software engineering
SWE-Bench Verified
Multimodal understanding
MMMU
Timeline
Release gapGemini 2.5 Flash shipped 322 days before GPT-5.4-Pro

Which is better: Gemini 2.5 Flash or GPT-5.4-Pro?

GPT-5.4-Pro leads Gemini 2.5 Flash on 1 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). Gemini 2.5 Flash shipped 322 days before GPT-5.4-Pro, so benchmark comparisons should account for the intervening progress.

Published specifications for these two models are limited — see each model page for the latest details.

Direct benchmark comparisons are unavailable — at least one of these models has not published scores on GPQA Diamond, SWE-Bench Verified, or MMMU.

Frequently asked questions

When was Gemini 2.5 Flash released?
Gemini 2.5 Flash was released by Google on Apr 17 2025.
When was GPT-5.4-Pro released?
GPT-5.4-Pro was released by OpenAI on Mar 5 2026.

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